A credit note will reduce the balance due, but may not be the correct accounting. Credit notes indicate that the amount is no longer due because of voluntary action on your part. It may be more appropriate to write off the remaining balance, such as when debts are uncollectible. See Write off bad debts | Manager. Write-offs can also be made for other reasons.
actually, it’s for the processing fee charged by the marketplace. We can’t know the exact fee charged by the marketplace until it was being paid to our account. So, what’s the difference if I use write-off/journal entry and credit note?
In your situation, you should not use either. The marketplace fee is actually a payment to a different entity than the customer from whom you received the receipt. There have been many discussion on the forum about arrangements like this. Search for them to see which solution best fits your circumstances. Many will be found by searching for “PayPal” or “commission.”